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Mylivell Aquarium Heater 25W 50W 100W 200W 300W Submersible Auto Thermostat Fish Tank Heater, Small Aquarium Heater for 10-100 Gallon Fish Tank, Freshwater & Saltwater Compatible

4.4 4.4 out of 5 stars 3,777 ratings

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300W for 65-100 Gallon

Purchase options and add-ons

  • Superior Safety and Enriched Ambiance: The fish tank heater is constructed with high-quality shatterproof glass and BPA-free plastic, ensuring a safe habitat for your fish. Aquarium heater 300W, power cord 4.4ft, designed for most fish tanks, recommended for aquariums 65-100 Gallons.
  • Precision in Temperature Control: This aquarium heater excels in providing a customizable temperature range of 68°F-93°F, catering to various aquatic species. Suitable for freshwater and saltwater tanks, it creates a natural environment for your finned friends.
  • Compact, Versatile, and Efficient: Whether you have a small aquarium heater 5-gallon tank or an aquarium heater 55-gallon setup, this compact heater can be placed horizontally or vertically. Position near a filter or pump for even heat distribution.
  • Smart, Worry-Free Heating: Equipped with an intelligent automatic temperature control system, this small aquarium heater ensures optimal comfort for your fish by switching off when the desired temperature is reached and back on if water temperature falls.
  • Dedicated Support and Guaranteed Satisfaction: Purchase with confidence knowing that this heater for fish tank is built with robust materials and safety features. Especially the polarized plug prevents electrical shock. We stand by our product with a 12-month warranty and 24/7 professional after-sales service.

Customer ratings by feature

Value for money
4.5 4.5
Suction power
4.2 4.2
Easy to read
3.9 3.9
Temperature Control
3.8 3.8

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Mylivell Aquarium Heater 25W 50W 100W 200W 300W Submersible Auto Thermostat Fish Tank Heater, Small Aquarium Heater for 10-100 Gallon Fish Tank, Freshwater & Saltwater Compatible
Mylivell Aquarium Heater 25W 50W 100W 200W 300W Submersible Auto Thermostat Fish Tank Heater, Small Aquarium Heater for 10-100 Gallon Fish Tank, Freshwater & Saltwater Compatible
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Price-35% $12.99
List:$19.99
$45.99$37.99-40% $17.99
List:$29.99
$11.69$14.99
Delivery
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Customer Ratings
Suction power
4.2
3.2
3.2
4.5
5.0
3.0
Accuracy
3.7
4.1
4.1
3.7
4.8
3.5
Temperature Control
3.8
3.8
3.8
4.0
5.0
Value for money
4.5
4.9
4.9
3.7
Easy to read
3.9
4.5
4.5
4.0
Sold By
Mylivell
Aqqa
Aqqa
FREESEA
Lucky Farm
CLL Pet Supplies

From the brand


Product Description

wall

fish

  • Mylivell Submersible Aquarium Heaters are one of the most popular way to keep your tank at a steady and controlled temperature, Fish water heater will be your best choice!

Mylivell Submersible Aquarium Heater

ML0100 Size: 100W - 20-45 Gallon Aquariums

  • You will need an aquarium heater to keep your tank in a steady and controlled temperature, as proper temperature range is very important to fish and other Aquatic in winter.
  • Mylivell Submersible Aquarium Heaters are one of the most popular way to keep your tank at a steady and controlled temperature, Fish water heater will be your best choice!

  • IPX 8 waterproof
  • Precise temperature setting
  • Both for fresh and salt water
  • Shatterproof glass construction
  • TruTemp dial adjusts from 65° to 93° F
  • Includes mounting bracket and suction cups
line
4
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aquarium heater aquarium heater beta heater aquarium fish tank heater tank heater fish tank heater
Mylivell Submersible Aquarium Heater 100W Mylivell Submersible Aquarium Heater 200W Mylivell Submersible Aquarium Heater 200W Mylivell Submersible Aquarium Heater 300W Mylivell Submersible Aquarium Heater 50W Mylivell Submersible Aquarium Heater 300W with Protective Cover
Customer Reviews
4.4 out of 5 stars
3,777
4.3 out of 5 stars
1,157
4.4 out of 5 stars
3,777
4.4 out of 5 stars
3,777
2.5 out of 5 stars
32
4.3 out of 5 stars
1,157
Features Popular Version Popular Version Upgraded Version Upgraded Version Upgraded Version Safe Cover
Watt 100 W 200 W 200 W 300W 50 W 50 W
Tank Size 20-45 Gallon 40-65 Gallon 40-65 Gallon 65-100 Gallon 10-25 Gallon 10-25 Gallon

Looking for specific info?

Product details

  • Package Dimensions ‏ : ‎ 13.43 x 2.8 x 1.65 inches; 9.14 ounces
  • Date First Available ‏ : ‎ September 4, 2019
  • Manufacturer ‏ : ‎ Mylivell
  • ASIN ‏ : ‎ B07XC4GLHG
  • Customer Reviews:
    4.4 4.4 out of 5 stars 3,777 ratings

Customer reviews

4.4 out of 5 stars
4.4 out of 5
3,777 global ratings

Customers say

Customers like the value, readability, ease of installation, and accuracy of the pet supplies. They mention that it works quickly, adjusts easily, and is easy to add to fish tank. They appreciate the accuracy and consistency of the product. That said, some complain about the cord length. Opinions are mixed on quality, suction, and fit.

AI-generated from the text of customer reviews

77 customers mention62 positive15 negative

Customers like the value of the pet supplies. For example, they mention it's a great light for the price point, and an awesome little fish tank heater.

"Good value! Still running. I usually go through them but this one is durable!!👍🏽👍🏽👍🏽..." Read more

"This is an awesome little fish tank heater...." Read more

"...I like that. Great light for the price point. I've had it about 2 months and have no complaints." Read more

"...get it to stick and then sometimes it still doesn’t but the heater itself is very good" Read more

29 customers mention23 positive6 negative

Customers like the readability of the pet supplies. They say it works quickly, adjusts easily, and has an easy to read temperature setting display. Customers also mention that it's easy to regulate and control the temperature.

"...had it in my 20 gallon for about 2 days now and the heater is getting more and more precise, temperature wise, as the days go on...." Read more

"I use it for my 55 gal and it keeps a nice heat of 80 and its adjustable." Read more

"...You can adjust it easily. My old heaters just had a "+ /- " and hard to turn and adjust incrementally...." Read more

"I like this heater. I can clearly see the temperature setting and the light when it's in operation...." Read more

26 customers mention22 positive4 negative

Customers find the installation of the pet supplies to be easy. They mention that the directions are spot on, it seems easy in practice, and the gauge is simplified. Some say that the product is well made and easy to add to a fish tank.

"...Either way, if you’re willing to risk it, it looks cool and has decent instructions" Read more

"...The knob was easy to twist and was smooth as butter, no difficulty at all. I guess the one I received initially was just a bad unit...." Read more

"This heater is easy to use and it works...." Read more

"Product arrived just as described. Easy to read instructions and simple operation...." Read more

20 customers mention14 positive6 negative

Customers like the accuracy of the pet supplies. They mention that it works great and is consistent. Some are impressed with the quality and accuracy, saying it's definitely worth the buy.

"...I have 2 of these now and they are very consistent. The temperature control is off by a few degrees but that’s not a big problem...." Read more

"...I bought 2 heaters for my 75 gallon tank and they are very accurate. It keeps the levels within a 0.3 degrees of what I set them to...." Read more

"...And the accuracy is simply not there. I had it set above 90. degrees to achieve the 80. I needed." Read more

"Very accurate 100 w for my 20 gallon tropical fish tank. Has a light to show its working. I brought a 2nd one today 03202020 as backup...." Read more

337 customers mention198 positive139 negative

Customers are mixed about the quality of the aquarium heater. Some mention it's going strong at 78 °F and hasn't had any problems, while others say that it didn't work because the temperature was not coming up. The temperature control is off by a few degrees and the gauge is very iffy. The water gets pretty cold before it registers and turns on.

"Good value! Still running. I usually go through them but this one is durable!!👍🏽👍🏽👍🏽..." Read more

"...REVISION ON FEBRUARY 3rd 2020The temperature gauge is still very iffy and I have little confidence it will ever be truly accurate...." Read more

"...It kept the water temperature at a set 78degrees....BUT TODAY....only 6 days later, when I was doing my 50% water change, I came to find out that..." Read more

"...It shows the coiling inside of the heater which gives a cool industrial appearance.That’s as far as I got though...." Read more

11 customers mention4 positive7 negative

Customers are mixed about the fit of the pet supplies. Some mention that it's the right size heater for a twenty gallon tank, while others say that it is way too big for i 20 g tank, too short, and image deceiving in size.

"...The only drawback is it’s so long! The whole thing has to be submerged under water and we have a small tank...." Read more

"...Its about 9 inched long and fits perfectly. It keeps the temperature within 2° of what it's set to...." Read more

"This is too big for a 10 gallon tank. Since the cord is short, it has to go next to the undergravel filter, and it doesn't fit in that space...." Read more

"...I like it and its small and perfect for what i need it for." Read more

11 customers mention6 positive5 negative

Customers are mixed about the suction of the pet supplies. Some mention that the sucker cups do very well, while others say that they constantly come loose.

"...It also turns off and on as needed. Great suction and warmth overall a good heater!" Read more

"...After running for less than half an hour, the suction cups had completely melted off and into the water...." Read more

"Great suction cups. The thermostat is currently set to 77 but is only 74 degrees in my tank. The lights are great...." Read more

"...It gets hot but I can’t tell the temp. The suction cups keep coming loose." Read more

13 customers mention2 positive11 negative

Customers are dissatisfied with the cord length of the pet supplies. They mention that the control is tight and the cable is not long enough to set the product as they would like.

"...if you have a small tank, only thing I didn’t like was the cable wasn’t long enough to do how I want it to be set up.Over all…...." Read more

"The cable is short. Other that that it works well. If you buy other brand, their original packaging did not protect the bottom glass...." Read more

"...My aquarium being on a 2.5” tall cabinet, the cord is too short to make it to the nearest outlet...." Read more

"This is too big for a 10 gallon tank. Since the cord is short, it has to go next to the undergravel filter, and it doesn't fit in that space...." Read more

Beware! Glass Broke while in Tank!
5 Stars
Beware! Glass Broke while in Tank!
I received my heater on the 20th and it was in good condition and worked great. It kept the water temperature at a set 78degrees....BUT TODAY....only 6 days later, when I was doing my 50% water change, I came to find out that the glass had popped! Fortunately non of the glass had broken off while inside of the tank. Only once I removed it, did it finally fall apart. I a very disappointed that this happened and my husband and I do not understand why it happened. It was placed by the filter so that a constant flow of water would move pass it as recommended. So what would cause it to pop. In my opinion, it is really unsafe for aquariums.****UPDATE****Two days after posting my review I was contacted by the Mylivell seller though email to rectify the problem. I am highly satisfied with their costumer service and professionalism. They were very sincere and prompt in their replies. As of right now, I have the new heater in our 36gal. It has been six days since the setup of our new tank and the heater appears to be doing fine. Just as the previous heater did, this one is also keeping the water at the set temperature. My husband and I genuinely hope that the popping of the glass tube on the previous heater was just an isolated event and will not happen again. But If another issue should occur I will be sure to post an update.1/17/20
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Top reviews from the United States

Reviewed in the United States on March 19, 2024
Color: 200W for 40-65 GallonVerified Purchase
Reviewed in the United States on November 26, 2019
Color: 100W for 20-45 GallonVerified Purchase
Customer image
5.0 out of 5 stars Beware! Glass Broke while in Tank!
Reviewed in the United States on November 26, 2019
I received my heater on the 20th and it was in good condition and worked great. It kept the water temperature at a set 78degrees....BUT TODAY....only 6 days later, when I was doing my 50% water change, I came to find out that the glass had popped! Fortunately non of the glass had broken off while inside of the tank. Only once I removed it, did it finally fall apart. I a very disappointed that this happened and my husband and I do not understand why it happened. It was placed by the filter so that a constant flow of water would move pass it as recommended. So what would cause it to pop. In my opinion, it is really unsafe for aquariums.

****UPDATE****
Two days after posting my review I was contacted by the Mylivell seller though email to rectify the problem. I am highly satisfied with their costumer service and professionalism. They were very sincere and prompt in their replies. As of right now, I have the new heater in our 36gal. It has been six days since the setup of our new tank and the heater appears to be doing fine. Just as the previous heater did, this one is also keeping the water at the set temperature. My husband and I genuinely hope that the popping of the glass tube on the previous heater was just an isolated event and will not happen again. But If another issue should occur I will be sure to post an update.1/17/20
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89 people found this helpful
Report
Reviewed in the United States on December 25, 2019
Color: 300W for 65-100 GallonVerified Purchase
15 people found this helpful
Report
Reviewed in the United States on February 11, 2024
Color: 100W for 20-45 GallonVerified Purchase
Reviewed in the United States on February 1, 2024
One person found this helpful
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Reviewed in the United States on February 19, 2024
Color: 100W for 20-45 GallonVerified Purchase
Reviewed in the United States on November 25, 2023
Color: 50W for 10-25 GallonVerified Purchase
Reviewed in the United States on February 1, 2020
Color: 100W for 20-45 GallonVerified Purchase
2 people found this helpful
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Top reviews from other countries

Amazon Customer
5.0 out of 5 stars Works well
Reviewed in Canada on April 27, 2023
Color: 50W for 10-25 GallonVerified Purchase
Mel
5.0 out of 5 stars So far so good
Reviewed in Canada on November 1, 2023
Color: 100W for 20-45 GallonVerified Purchase
Nivedha Athithan
4.0 out of 5 stars This is an amazing heater, I use it in my 10 gallon tank
Reviewed in Canada on May 21, 2023
Color: 50W for 10-25 GallonVerified Purchase
One person found this helpful
Report
Hal Arthur
5.0 out of 5 stars Keeps the temperature at the correct preset
Reviewed in Canada on May 16, 2023
One person found this helpful
Report
Sean
5.0 out of 5 stars Working perfectly
Reviewed in Canada on July 1, 2022
Color: 50W for 10-25 GallonVerified Purchase